Temperature transmitter with dustproof function

Abstract

The utility model discloses a temperature transmitter with a dustproof function, which comprises a junction box body, a locking joint and a junction box upper cover, the junction box upper cover covers the outer side of the top of the junction box body in a threaded manner, a mounting rack is connected in the junction box body, a chip is arranged on the mounting rack, and the locking joint is connected with the junction box upper cover. A dust collection blower is arranged on the junction box upper cover in a penetrating manner, the dust collection blower comprises a rubber air bag, and the bottom end of the rubber air bag is communicated with an air blowing nozzle; through cooperation of a dust collection leather blower and a dust collection fan, a rubber air bag is repeatedly extruded, air is frequently discharged through an air blowing nozzle, dust on the surface of a chip can be blown away to fly up, and the floating dust is adsorbed, extracted and discharged into a dust collection cylinder to be collected through powerful airflow generated by the dust collection fan. According to the temperature transmitter, dust in the transmitter shell can be prevented from covering the chip, and dust is also prevented from remaining in the junction box body, so that the service life of the temperature transmitter is prolonged, and normal use of the temperature transmitter is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of temperature transmitters, in particular to a temperature transmitter with a dustproof function. Background Art

[0002] The temperature transmitter is a field-mounted temperature transmitter unit in the DDZ-S series of instruments. It uses a two-wire transmission method (two wires as power input and a common transmission line for signal output) to convert the thermocouple and thermal resistor signals into a 4-20mA output signal that is linear with the input signal or the temperature signal. The transmitter can be installed in the junction box of the thermocouple and thermal resistor to form an integrated structure with them. As a new generation of temperature measuring instruments, it can be widely used in metallurgy, petroleum, chemical industry, electric power, light industry, textile, food, national defense, scientific research and other industrial sectors.

[0003] Existing temperature transmitters generally include a transmitter housing and a chip, wherein the chip is fixedly installed inside the transmitter housing, and the chip is used to start and stop the circuit according to temperature changes; when the temperature transmitter is in use, as the use time increases, dust will enter the transmitter housing through the gap of the temperature transmitter housing, and the dust will cover the chip, which may easily cause a short circuit in the chip, affecting the normal use of the temperature transmitter and shortening the service life of the temperature transmitter.

[0004] For this reason, we propose a temperature transmitter with dustproof function. Utility Model Content

[0005] In order to make up for the above deficiencies, the utility model provides a temperature transmitter with a dustproof function to overcome the above technical problems or at least partially solve the above problems.

[0006] To solve the above technical problems, the utility model provides the following technical solutions: a temperature transmitter with dustproof function, comprising a junction box body, a locking joint and a junction box cover, wherein a threaded cover on the junction box cover is arranged on the outside of the top of the junction box body, a mounting bracket is connected to the inner part of the junction box body, a chip is arranged on the mounting bracket, a dust suction blower is penetrated through the junction box cover, the dust suction blower comprises a rubber airbag, a blowing nozzle is connected to the bottom end of the rubber airbag, the bottom end of the blowing nozzle penetrates through the junction box cover and extends to the inside of the junction box body, an air inlet is arranged at the top of the rubber airbag, a dust suction fan is connected to one side of the outer wall of the junction box body, an input end of the dust suction fan is connected to a dust suction pipe, the dust suction pipe extends to the inside of the junction box body, an output end of the dust suction fan is connected to a dust exhaust pipe, and a dust collecting cylinder is threadedly sleeved on the bottom end of the dust exhaust pipe.

[0007] As a preferred technical solution of a temperature transmitter with dustproof function of the utility model, an external thread is provided on the outer side of the top of the junction box body, and an internal thread matching the external thread is provided on the inner wall of the junction box upper cover.

[0008] As a preferred technical solution of a temperature transmitter with dustproof function of the utility model, a through hole is opened on the upper cover of the junction box, a sealing ring is connected in the through hole, and the blowing nozzle is movably inserted in the sealing ring.

[0009] As a preferred technical solution of the temperature transmitter with dustproof function of the utility model, a dustproof net is connected to the inner wall of the air inlet.

[0010] As a preferred technical solution of a temperature transmitter with dustproof function of the utility model, a gap is left between the chip and the junction box body, and the end of the dust suction pipe away from the dust suction fan is arranged on one side of the chip.

[0011] As a preferred technical solution of a temperature transmitter with dustproof function of the utility model, an external thread is provided on the outer wall of the bottom end of the dust exhaust pipe, and an internal thread matching the external thread is provided on the outer wall of the top end of the dust collecting barrel.

[0012] As a preferred technical solution of a temperature transmitter with dustproof function of the utility model, the locking connector is connected to one side of the junction box body, and the locking connector is used for connecting the external power signal line and the chip.

[0013] Compared with the prior art, the utility model can achieve the following beneficial effects:

[0014] 1. Through the cooperation of the dust suction leather blower and the dust suction fan, the rubber airbag is squeezed repeatedly, and the air is discharged frequently through the blowing nozzle, so that the dust on the surface of the chip can be blown away and the dust can be floated up. The dust suction fan generates a strong airflow to absorb and extract the floating dust and discharge it into the dust collection barrel for collection, which can prevent the dust in the transmitter housing from covering the chip and prevent a large amount of dust from being retained in the junction box, thereby prolonging the service life of the temperature transmitter and facilitating the normal use of the temperature transmitter;

[0015] 2. The chip is installed inside the junction box body through the mounting frame by using the mounting frame, and the mounting frame can make the chip appear suspended, so as to avoid dust accumulation between the chip and the bottom inner wall of the junction box body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0017] Figure 2It is a three-dimensional structural schematic diagram of the junction box body of the utility model;

[0018] Figure 3 For the utility model Figure 2 A schematic diagram of the enlarged structure at A in the middle;

[0019] Figure 4 The utility model is a three-dimensional structural schematic diagram of the vacuum leather blower.

[0020] Among them: 1. Junction box body; 2. Junction box cover; 3. Mounting frame; 4. Chip; 5. Dust suction leather blower; 51. Rubber airbag; 52. Air inlet; 53. Dustproof net; 54. Blowing nozzle; 6. Sealing ring; 7. Dust suction fan; 8. Dust suction pipe; 9. Dust exhaust pipe; 10. Dust collecting cylinder; 11. Through hole; 12. Locking joint. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, purpose and efficacy of the utility model easy to understand, the utility model is further described below in conjunction with specific embodiments, but the following embodiments are only preferred embodiments of the utility model, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the scope of protection of the utility model. The experimental methods in the following embodiments are conventional methods unless otherwise specified, and the materials, reagents, etc. used in the following embodiments are all commercially available unless otherwise specified.

[0022] Example:

[0023] See also Figure 1-Figure 4 A temperature transmitter with dustproof function comprises a junction box body 1, a locking joint 12 and a junction box upper cover 2, the junction box upper cover 2 having a threaded cover arranged on the outer side of the top of the junction box body 1, a mounting frame 3 connected inside the junction box body 1, a chip 4 arranged on the mounting frame 3, a dust suction leather blower 5 passing through the junction box upper cover 2, the dust suction leather blower 5 comprising a rubber airbag 51, a blowing nozzle 54 connected to the bottom end of the rubber airbag 51, the bottom end of the blowing nozzle 54 passes through the junction box upper cover 2 and extends to the inside of the junction box body 1, an air inlet 52 is opened at the top of the rubber airbag 51, a dust suction fan 7 is connected to one side of the outer wall of the junction box body 1, a dust suction pipe 8 is connected to the input end of the dust suction fan 7, the dust suction pipe 8 extends to the inside of the junction box body 1, a dust exhaust pipe 9 is connected to the output end of the dust suction fan 7, and a dust collecting cylinder 10 is threadedly sleeved at the bottom end of the dust exhaust pipe 9.

[0024] In other embodiments, an external thread is provided on the top outer side of the junction box body 1, and an internal thread matching the external thread is provided on the inner wall of the junction box cover 2. This design allows the junction box cover 2 to be detachably connected to the top outer side of the junction box body 1, making it convenient for subsequent disassembly of the junction box cover 2.

[0025] In other embodiments, a through hole 11 is provided on the junction box upper cover 2, a sealing ring 6 is connected to the through hole 11, and the blowing nozzle 54 is movably inserted into the sealing ring 6. The sealing ring 6 increases the sealing between the blowing nozzle 54 and the through hole 11 to prevent dust from entering the interior of the junction box body 1 through the connection.

[0026] In other embodiments, a dustproof net 53 is connected to the inner wall of the air inlet 52, and the air entering the air inlet 52 can be filtered through the dustproof net 53 to prevent external dust from entering the inside of the junction box body 1 through the air inlet 52 and covering the chip 4.

[0027] In other embodiments, a gap is left between the chip 4 and the junction box body 1, and the chip 4 can be suspended by the mounting frame 3, which can prevent dust from accumulating between the chip 4 and the bottom inner wall of the junction box body 1. The end of the dust suction pipe 8 away from the dust suction fan 7 is arranged on one side of the chip 4, so that the dust suction pipe 8 can easily remove the dust on the chip 4.

[0028] In other embodiments, an external thread is provided on the outer wall of the bottom end of the dust exhaust pipe 9, and an internal thread matching the external thread is provided on the outer wall of the top end of the dust collecting barrel 10. The external thread and the internal thread are used in combination to facilitate the removal of the dust collecting barrel 10 from the bottom end of the dust exhaust pipe 9, thereby facilitating the cleaning of the dust in the dust collecting barrel 10.

[0029] In other embodiments, the locking connector 12 is connected to one side of the junction box body 1, and the locking connector 12 is used to connect the external power signal line and the chip 4. The external power signal line is connected to the power terminal of the chip 4 through the locking connector.

[0030] When the utility model is used, when it is necessary to clean the dust on the chip 4, the rubber airbag 51 is squeezed repeatedly by hand, and the outside air enters the rubber airbag 51 through the air inlet 52, and the air flow is repeatedly blown out from the blowing nozzle 54, which can blow away the dust on the surface of the chip 4 and make the dust float up, and the dust suction fan 7 is started simultaneously, and the dust suction fan 7 generates a strong airflow to absorb and extract the floating dust through the dust suction pipe 8 and discharge it into the dust collecting barrel 10 through the dust exhaust pipe 9 for collection, which can prevent the dust in the junction box body 1 from covering the 4 chips, and also prevent a large amount of dust from being retained in the junction box body 1, thereby increasing the service life of the temperature transmitter and facilitating the normal use of the temperature transmitter. The dust collecting barrel 10 can be rotated regularly to remove it from the dust exhaust pipe 9, so as to facilitate the cleaning of the dust in the dust collecting barrel 10.

[0031] It should be noted that the specific model specifications of the chip 4 and the dust suction fan 7 need to be selected and determined according to the actual specifications of the device, and the specific selection calculation method adopts the existing technology in this field, so it will not be described in detail. The chip 4 and the dust suction fan 7 are devices or equipment that exist in the prior art, or are devices or equipment that can be realized by the prior art. Their power supply, specific composition and principles are clear to those skilled in the art and are common knowledge in this field, so they will not be described in detail.

[0032] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0033] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A temperature transmitter with dustproof function, comprising a junction box body (1), a locking connector (12) and a junction box cover (2), characterized in that: The threaded cover of the junction box upper cover (2) is arranged on the outer side of the top of the junction box body (1); a mounting frame (3) is connected inside the junction box body (1); a chip (4) is arranged on the mounting frame (3); a dust suction blower (5) is passed through the junction box upper cover (2); the dust suction blower (5) comprises a rubber airbag (51); the bottom end of the rubber airbag (51) is connected to a blowing nozzle (54); the bottom end of the blowing nozzle (54) passes through the junction box upper cover (2) and extends into the interior of the junction box body (1); the top end of the rubber airbag (51) is provided with a An air inlet (52) is provided, a dust suction fan (7) is connected to one side of the outer wall of the junction box body (1), the input end of the dust suction fan (7) is connected to a dust suction pipe (8), the dust suction pipe (8) extends into the interior of the junction box body (1), the output end of the dust suction fan (7) is connected to a dust exhaust pipe (9), a dust collecting cylinder (10) is threadedly sleeved on the bottom end of the dust exhaust pipe (9); a through hole (11) is provided on the junction box upper cover (2), a sealing ring (6) is connected in the through hole (11), and the air blowing nozzle (54) is movably inserted into the interior of the sealing ring (6).

2. The temperature transmitter with dustproof function according to claim 1, characterized in that: The outer side of the top of the junction box body (1) is provided with an external thread, and the inner wall of the junction box upper cover (2) is provided with an internal thread matching the external thread.

3. A temperature transmitter with dustproof function according to claim 1 or 2, characterized in that: A dustproof net (53) is connected to the inner wall of the air inlet (52).

4. A temperature transmitter with dustproof function according to claim 1 or 2, characterized in that: A gap is left between the chip (4) and the junction box body (1), and one end of the dust suction pipe (8) away from the dust suction fan (7) is arranged on one side of the chip (4).

5. The temperature transmitter with dustproof function according to claim 3, characterized in that: A gap is left between the chip (4) and the junction box body (1), and one end of the dust suction pipe (8) away from the dust suction fan (7) is arranged on one side of the chip (4).

6. A temperature transmitter with dustproof function according to claim 1, 2 or 5, characterized in that: An external thread is provided on the outer wall of the bottom end of the dust exhaust pipe (9), and an internal thread matching the external thread is provided on the outer wall of the top end of the dust collecting cylinder (10).

7. The temperature transmitter with dustproof function according to claim 3, characterized in that: An external thread is provided on the outer wall of the bottom end of the dust exhaust pipe (9), and an internal thread matching the external thread is provided on the outer wall of the top end of the dust collecting cylinder (10).

8. The temperature transmitter with dustproof function according to claim 4, characterized in that: An external thread is provided on the outer wall of the bottom end of the dust exhaust pipe (9), and an internal thread matching the external thread is provided on the outer wall of the top end of the dust collecting cylinder (10).

9. A temperature transmitter with dustproof function according to claim 1 or 2 or 5 or 7 or 8, characterized in that: The locking connector (12) is connected to one side of the junction box body (1), and the locking connector (12) is used for connecting an external power signal line and a chip (4).

10. The temperature transmitter with dustproof function according to claim 3, characterized in that: The locking connector (12) is connected to one side of the junction box body (1), and the locking connector (12) is used for connecting an external power signal line and a chip (4).

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